18330329911 has 2 divisors, whose sum is σ = 18330329912. Its totient is φ = 18330329910.

The previous prime is 18330329891. The next prime is 18330329939. The reversal of 18330329911 is 11992303381.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 18330329911 - 2⁹ = 18330329399 is a prime.

It is a super-2 number, since 2×18330329911² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (18330399911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9165164955 + 9165164956.

It is an arithmetic number, because the mean of its divisors is an integer number (9165164956).

Almost surely, 2^18330329911 is an apocalyptic number.

18330329911 is a deficient number, since it is larger than the sum of its proper divisors (1).

18330329911 is an equidigital number, since it uses as much as digits as its factorization.

18330329911 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 34992, while the sum is 40.

The spelling of 18330329911 in words is "eighteen billion, three hundred thirty million, three hundred twenty-nine thousand, nine hundred eleven".